Worked on the Graylog2/graylog2-server repository to enhance testability of the role management subsystem. Focused on making the RoleRemover class publicly accessible, which allowed external test suites to directly exercise role removal logic without altering existing functionality. This change, implemented in Java with an emphasis on unit testing, streamlined the process for quality assurance teams to validate role management features and facilitated safer future refactoring. By limiting the modification to an access level adjustment, the work maintained system stability while reducing friction for external testing. No bugs were addressed during this period, and the contribution centered on improving code maintainability.